Title:
MAGNETIC ELASTIC WAVE ATTENUATOR AND PRODUCTION OF AMORPHOUS MAGNETIC WIRE
Document Type and Number:
Japanese Patent JPH07243837
Kind Code:
A
Abstract:
PURPOSE: To control the attenuation fatcor of magnetic eleastic wave electrically and at high speed.
CONSTITUTION: The attenuator is comprised of an amorphous magnetic wire 1, a coil 2 wound around a part of a propagation path for magnetic eleastic wave thereof, and a current generation circuit 10 for supplying a current to the coil 2. The current applied to the coil 2 is regulated so as to control a magnetic field applied to the wire 1 and change the attenuation constant. In addition, the amorphous magnetic wire is partly treated with heat treatment at least after it is formed by a spinning method in a rotating liquid.
Inventors:
MASUDA SUMIO
SUMINO KEIICHI
SUMINO KEIICHI
Application Number:
JP5484194A
Publication Date:
September 19, 1995
Filing Date:
March 02, 1994
Export Citation:
Assignee:
JECO KK
International Classes:
G01B17/00; G01D5/48; H03H9/30; (IPC1-7): G01B17/00; G01D5/48; H03H9/30
Attorney, Agent or Firm:
Masaki Yamakawa